How to create many entity collections?

CesiumJS
#1

i want to make more than one entity collections

for example, employees entity collection, customers entity collection markets entity collection,

each entity collection has an entities, where each entity has a billboard and a label.

How to do it?

#2

You can create custom data sources for this, see: https://cesium.com/docs/cesiumjs-ref-doc/CustomDataSource.html